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Hello,I am using the author code and having some problems. when i m sending the signal through an android device only the horn and lights are working perfectly,but both of the machines are not responding. I have checked that l293d is working perfectly by connecting dc motor and trigger the voltage of 5 volts at the input pins. On pin 5 of arduino i have connected the led to check the voltage but the led is slightly glowing and turns off. plz help me in troubleshooting.Regards